Formulas

The formulas adds computed series to the system ; most previously seen API points work with them. What does not: update and replace (obviously, since formula are by construction a read-only) feature.

register_formula	Define a series as a named formula.
formula	Get the formula associated with a name.
oldformulas
eval_formula	Execute a formula on the spot.
formula_depth	Compute the depth of a formula.
formula_components	Compute a mapping from series name (defined as formulas) to the names of the component series.
depends
register_formula_bindings	Define a group by association of an existing series formula and a bindings object.
bindings_for
register_group_formula	Define a group as a named formula.
group_formula	Get the group formula associated with a name.
group_formula_depth
group_eval_formula	Execute a group formula on the spot.
group_depends